{
"blocks" : 1186,
"currentblocksize" : 1000,
"currentblocktx" : 0,
"difficulty" : 5640.75854506,
"errors" : "",
"generate" : false,
"genproclimit" : -1,
"hashespersec" : 0,
"pooledtx" : 0,
"testnet" : false
}

Someone is mining and mining hard a day early